/*
 * Copyright (C) 2005 - 2013 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008 - 2013 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2010 - 2013 ProjectSkyfire <http://www.projectskyfire.org/>
 *
 * Copyright (C) 2011 - 2013 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _FORMATIONS_H
#define _FORMATIONS_H

#include "Common.h"

class CreatureGroup;

struct FormationInfo
{
    uint32 leaderGUID;
    float follow_dist;
    float follow_angle;
    uint8 groupAI;
};

class CreatureGroupManager
{
    friend class ACE_Singleton<CreatureGroupManager, ACE_Null_Mutex> ;
public:
    void AddCreatureToGroup (uint32 group_id, Creature *creature);
    void RemoveCreatureFromGroup (CreatureGroup *group, Creature *creature);
    void LoadCreatureFormations ();
};

#define formation_mgr ACE_Singleton<CreatureGroupManager, ACE_Null_Mutex>::instance()

typedef UNORDERED_MAP<uint32/*memberDBGUID*/, FormationInfo*> CreatureGroupInfoType;

extern CreatureGroupInfoType CreatureGroupMap;

class CreatureGroup
{
private:
    Creature *m_leader;          //Important do not forget sometimes to work with pointers instead synonims :D:D
    typedef std::map<Creature*, FormationInfo*> CreatureGroupMemberType;
    CreatureGroupMemberType m_members;

    uint32 m_groupID;
    bool m_Formed;

public:
    //Group cannot be created empty
    explicit CreatureGroup (uint32 id) :
            m_leader(NULL), m_groupID(id), m_Formed(false)
    {
    }
    ~CreatureGroup ()
    {
        sLog->outDebug(LOG_FILTER_UNITS, "Destroying group");
    }

    Creature* getLeader () const
    {
        return m_leader;
    }
    uint32 GetId () const
    {
        return m_groupID;
    }
    bool isEmpty () const
    {
        return m_members.empty();
    }
    bool isFormed () const
    {
        return m_Formed;
    }

    void AddMember (Creature *member);
    void RemoveMember (Creature *member);
    void FormationReset (bool dismiss);

    void LeaderMoveTo (float x, float y, float z);
    void MemberAttackStart (Creature* member, Unit *target);
};

#endif
